acinclude.m4

dnl @synopsis AC_PROG_JAVAH
dnl
dnl AC_PROG_JAVAH tests the availability of the javah header generator
dnl and looks for the jni.h header file. If available, JAVAH is set to
dnl the full path of javah and CPPFLAGS is updated accordingly.
dnl
dnl @category Java
dnl @author Luc Maisonobe <luc@spaceroots.org>
dnl @version 2002-03-25
dnl @license AllPermissive

AC_DEFUN([AC_PROG_JAVAH],[
AC_REQUIRE([AC_CANONICAL_SYSTEM])dnl
AC_REQUIRE([AC_PROG_CPP])dnl
AC_PATH_PROG(JAVAH,javah)
if test x"`eval 'echo $ac_cv_path_JAVAH'`" != x ; then
  AC_TRY_CPP([#include <jni.h>],,[
    ac_save_CPPFLAGS="$CPPFLAGS"
changequote(, )dnl
    ac_dir=`echo $ac_cv_path_JAVAH | sed 's,\(.*\)/[^/]*/[^/]*$,\1/include,'`
    ac_machdep=`echo $build_os | sed 's,[-0-9].*,,' | sed 's,cygwin,win32,'`
changequote([, ])dnl
    CPPFLAGS="$ac_save_CPPFLAGS -I$ac_dir -I$ac_dir/$ac_machdep"
    AC_TRY_CPP([#include <jni.h>],
               ac_save_CPPFLAGS="$CPPFLAGS",
               AC_MSG_WARN([unable to include <jni.h>]))
    CPPFLAGS="$ac_save_CPPFLAGS"])
fi])


dnl @synopsis AC_JNI_INCLUDE_DIR
dnl
dnl AC_JNI_INCLUDE_DIR finds include directories needed for compiling
dnl programs using the JNI interface.
dnl
dnl JNI include directories are usually in the java distribution This
dnl is deduced from the value of JAVAH. When this macro completes, a
dnl list of directories is left in the variable JNI_INCLUDE_DIRS.
dnl
dnl Example usage follows:
dnl
dnl     AC_JNI_INCLUDE_DIR
dnl
dnl     for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
dnl     do
dnl             CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
dnl     done
dnl
dnl If you want to force a specific compiler:
dnl
dnl - at the configure.in level, set JAVAH=yourcompiler before calling
dnl AC_JNI_INCLUDE_DIR
dnl
dnl - at the configure level, setenv JAVAH
dnl
dnl Note: This macro can work with the autoconf M4 macros for Java
dnl programs. This particular macro is not part of the original set of
dnl macros.
dnl
dnl @category InstalledPackages
dnl @author Don Anderson <dda@sleepycat.com>
dnl @version 2006-05-27
dnl @license AllPermissive

AC_DEFUN([AC_JNI_INCLUDE_DIR],[

JNI_INCLUDE_DIRS=""
test "x$JAVAH" = x && AC_MSG_ERROR(['\$JAVAH' undefined])
AC_PATH_PROG(_ACJNI_JAVAH, javah, no)
test "x$_ACJNI_JAVAH" = xno && AC_MSG_ERROR([$JAVAH could not be found in path])

_ACJNI_FOLLOW_SYMLINKS("$_ACJNI_JAVAH")
_JTOPDIR=`echo "$_ACJNI_FOLLOWED" | sed -e 's://*:/:g' -e 's:/[[^/]]*$::'`
case "$host_os" in
        darwin*)        _JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
                        _JINC="$_JTOPDIR/Headers";;
        *)              _JINC="$_JTOPDIR/include";;
esac
if test -f "$_JINC/jni.h"; then
        JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JINC"
else
        _JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
        if test -f "$_JTOPDIR/include/jni.h"; then
                JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include"
        else
                AC_MSG_ERROR([cannot find java include files])
        fi
fi

# get the likely subdirectories for system specific java includes
case "$host_os" in
bsdi*)          _JNI_INC_SUBDIRS="bsdos";;
linux*)         _JNI_INC_SUBDIRS="linux genunix";;
osf*)           _JNI_INC_SUBDIRS="alpha";;
solaris*)       _JNI_INC_SUBDIRS="solaris";;
mingw*)			_JNI_INC_SUBDIRS="win32";;
cygwin*)		_JNI_INC_SUBDIRS="win32";;
*)              _JNI_INC_SUBDIRS="genunix";;
esac

# add any subdirectories that are present
for JINCSUBDIR in $_JNI_INC_SUBDIRS
do
        if test -d "$_JTOPDIR/include/$JINCSUBDIR"; then
                JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include/$JINCSUBDIR"
        fi
done
])

# _ACJNI_FOLLOW_SYMLINKS <path>
# Follows symbolic links on <path>,
# finally setting variable _ACJNI_FOLLOWED
# --------------------
AC_DEFUN([_ACJNI_FOLLOW_SYMLINKS],[
# find the include directory relative to the javac executable
_cur="$1"
while ls -ld "$_cur" 2>/dev/null | grep " -> " >/dev/null; do
        AC_MSG_CHECKING(symlink for $_cur)
        _slink=`ls -ld "$_cur" | sed 's/.* -> //'`
        case "$_slink" in
        /*) _cur="$_slink";;
        # 'X' avoids triggering unwanted echo options.
        *) _cur=`echo "X$_cur" | sed -e 's/^X//' -e 's:[[^/]]*$::'`"$_slink";;
        esac
        AC_MSG_RESULT($_cur)
done
_ACJNI_FOLLOWED="$_cur"
])# _ACJNI